SUSE-SU-2023:4928-1

This update for MozillaFirefox fixes the following issues:

• Firefox Extended Support Release 115.6.0 ESR changelog-entry (bsc#1217974).

  • CVE-2023-6856: Heap-buffer-overflow affecting WebGL DrawElementsInstanced method with Mesa VM driver (bmo#1843782).
  • CVE-2023-6857: Symlinks may resolve to smaller than expected buffers (bmo#1796023).
  • CVE-2023-6858: Heap buffer overflow in nsTextFragment (bmo#1826791).
  • CVE-2023-6859: Use-after-free in PR_GetIdentitiesLayer (bmo#1840144).
  • CVE-2023-6860: Potential sandbox escape due to VideoBridge lack of texture validation (bmo#1854669).
  • CVE-2023-6861: Heap buffer overflow affected nsWindow::PickerOpen(void) in headless mode (bmo#1864118).
  • CVE-2023-6862: Use-after-free in nsDNSService (bsc#1868042).
  • CVE-2023-6863: Undefined behavior in ShutdownObserver() (bmo#1868901).
  • CVE-2023-6864: Memory safety bugs fixed in Firefox 121, Firefox ESR 115.6, and Thunderbird 115.6.
  • CVE-2023-6865: Potential exposure of uninitialized data in EncryptingOutputStream (bmo#1864123).
  • CVE-2023-6867: Clickjacking permission prompts using the popup transition (bmo#1863863).

• Fixed: Various security fixes and other quality improvements MFSA 2023-50 (bsc#1217230)

  • CVE-2023-6204 (bmo#1841050) Out-of-bound memory access in WebGL2 blitFramebuffer
  • CVE-2023-6205 (bmo#1854076) Use-after-free in MessagePort::Entangled
  • CVE-2023-6206 (bmo#1857430) Clickjacking permission prompts using the fullscreen transition
  • CVE-2023-6207 (bmo#1861344) Use-after-free in ReadableByteStreamQueueEntry::Buffer
  • CVE-2023-6208 (bmo#1855345) Using Selection API would copy contents into X11 primary selection.
  • CVE-2023-6209 (bmo#1858570) Incorrect parsing of relative URLs starting with '///'
  • CVE-2023-6212 (bmo#1658432, bmo#1820983, bmo#1829252, bmo#1856072, bmo#1856091, bmo#1859030, bmo#1860943, bmo#1862782) Memory safety bugs fixed in Firefox 120, Firefox ESR 115.5,...